core/src/main/java/com/taobao/arthas/core/command/klass100/RedefineCommand.java [76:104]:
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        for (String path : paths) {
            File file = new File(path);
            if (!file.exists()) {
                process.end(-1, "file does not exist, path:" + path);
                return;
            }
            if (!file.isFile()) {
                process.end(-1, "not a normal file, path:" + path);
                return;
            }
            if (file.length() >= MAX_FILE_SIZE) {
                process.end(-1, "file size: " + file.length() + " >= " + MAX_FILE_SIZE + ", path: " + path);
                return;
            }
        }

        Map<String, byte[]> bytesMap = new HashMap<String, byte[]>();
        for (String path : paths) {
            RandomAccessFile f = null;
            try {
                f = new RandomAccessFile(path, "r");
                final byte[] bytes = new byte[(int) f.length()];
                f.readFully(bytes);

                final String clazzName = readClassName(bytes);

                bytesMap.put(clazzName, bytes);

            } catch (Exception e) {
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core/src/main/java/com/taobao/arthas/core/command/klass100/RetransformCommand.java [196:224]:
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        for (String path : paths) {
            File file = new File(path);
            if (!file.exists()) {
                process.end(-1, "file does not exist, path:" + path);
                return;
            }
            if (!file.isFile()) {
                process.end(-1, "not a normal file, path:" + path);
                return;
            }
            if (file.length() >= MAX_FILE_SIZE) {
                process.end(-1, "file size: " + file.length() + " >= " + MAX_FILE_SIZE + ", path: " + path);
                return;
            }
        }

        Map<String, byte[]> bytesMap = new HashMap<String, byte[]>();
        for (String path : paths) {
            RandomAccessFile f = null;
            try {
                f = new RandomAccessFile(path, "r");
                final byte[] bytes = new byte[(int) f.length()];
                f.readFully(bytes);

                final String clazzName = readClassName(bytes);

                bytesMap.put(clazzName, bytes);

            } catch (Exception e) {
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